:root {
    --blue-sky: #4A90E2;
    --blue-navy: #2C3E50;
    --gray-100: #f8f9fa;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-600: #6c757d;
    --gray-800: #343a40;
    --white: #ffffff;
    --font-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-serif: Georgia, "Times New Roman", Times, serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans-serif);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--blue-navy);
    color: var(--white);
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

header .subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

main {
    min-height: calc(100vh - 300px);
    padding-bottom: 3rem;
}

section {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
    color: var(--blue-navy);
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

h3 {
    color: var(--blue-sky);
    font-size: 1.3rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.effective-date {
    color: var(--gray-600);
    font-style: italic;
    margin-bottom: 2rem;
}

ul {
    margin: 1rem 0 1.5rem 2rem;
}

ul li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

address {
    font-style: normal;
    line-height: 1.8;
    margin-top: 1rem;
}

footer {
    background-color: var(--gray-100);
    color: var(--gray-600);
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
}

.agreement-acceptance {
    background-color: var(--gray-100);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.button {
    display: inline-block;
    background-color: var(--blue-sky);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.button:hover {
    background-color: var(--blue-navy);
}

.button-secondary {
    background-color: var(--gray-400);
    color: var(--gray-800);
}

.button-secondary:hover {
    background-color: var(--gray-600);
    color: var(--white);
}

.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    color: var(--blue-navy);
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background-color: var(--gray-100);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.feature-card h3 {
    color: var(--blue-navy);
    margin-bottom: 1rem;
}

.message {
    padding: 1.5rem;
    border-radius: 8px;
    margin: 2rem 0;
}

.message-success {
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
    color: #155724;
}

.message-error {
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    color: #721c24;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    header .subtitle {
        font-size: 1rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    section {
        padding: 1.5rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}